Lathe attachment



(No Model.) S v w. MIDDLEDITGH.

} LATHE ATIAGHMENT'. No. 332,817.: Patented Dec. 22,1885.

WITNESSES INVENTQR: aid 222V, M

' UNITED STATES PATENT OFFIcE.

WALTER MIDDLEDITOH, OF DETROIT, MICHIGAN.

LATH E ATTACH M ENT.

SPECIFICATION forming part of Letters Patent No. 332,817, dated December 22, 1885.

I Application filed May 25, 1855.

To 0. whom it may concern.-

Beit known that LWALTER MIDDLEDITOH, a citizen of the United States, residing at De troit, in the county of WVayne and State of Michigan, have invented certain new and useful Improvements in Lathe Attachments; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My present invention is designed as a portable attachment for metal-working lathes, for the purpose of enabling the operator to do the work of a large lathe upon a small one at a slight expense, requiring but a short time to connect the attachment for doing the work, as hereinafter set forth.

My invention consists in a suitable support carrying a face-plate upon an independent bearing at an elevation to the drive-shaft, said face-plate being driven by means of a coupling with the free end of the spindle of a lathe carrying the common cone of pulleys, as hereinafter set forth, and pointed out in the .claims.

In the drawings forming a part of this specification, Figure 1 is a front elevation of my invention attached to. an ordinary iron lathe. Fig. 2 is a rear elevation, part in section. Fig. 3 is a detail in perspective broken away.

A represents the body of an ordinarylathe; O, the hood or guard over the common cone of pulleys, P, and D is a saddle or support, which is cast hollow, having recesses at the base fitting over the inner way-bearings, h h, of the lathe-bed, as shown in Fig, 2.

z z are lugs cast upon the saddle. Through said lugs I pass the bolts 11 a, the heads n n fitting within the slot of the tie-plate b, and by tightening the nuts 0 c the saddle or support D is firmly bound to the lathe bed. J ournaled within the saddle in axial line with the common spindle, S, of the lathe is a driving-shaft, d, carrying the pinion t at one end and the clutch-coupling c at the other end which engages with a like coupling, 1;. The

Serial No. 166,578. (No model.)

s is a set-screw working against the end of the shaft 25, to prevent the back of the faceplate from crowding upon the face of the pinion t. By coupling the shaft d in axial line with the spindle S of the lathe, the supplemental face-plate is driven, the speed being regulated by the shifting of the drive-belt upon the cone of pulleys, as is common. The face-plate B is provided with the usual openings, 6, through which pass bolts for the purpose of securing the material to be turned to the face-plate.

It will be observed from the foregoing that with an ordinary-sized lathe I am enabled to swing a wheel upon the faceplate B that could not be handled upon the ordinary face-plate of a lathe; that by using this attachment the face of a wheel of large diameter may be turned off readily, thus saving the cost of purchasing a large lathe to do work of this class, as is now common.

To remove the attachment, the nuts 0 c are loosened and the bolts a a are removed, when the support D may be moved to the right sufficiently to draw the couplings o c apart, when said rest or support and its face-plate may be lifted from the lathe. The couplingv is unscrewed from the spindle S. The ordinary face-plate is then placed upon said spindle, and the lathe is ready for its usual work.

Having thus fully set forth my present invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination,with the support mounted upon the frame of a lathe, and the means for securing said support to said lathe, of a faceplate, its shaft journaled in said support at an elevation to the drive shaft, and its gear adapted to engage with the pinion of the driveshaft, said pinion and the driveshaft journaled in said support and adapted to be coupled in axial line with the spindle of a lathe, for the purposes set forth.

2. In combination with the body of a lathe, a support mounted thereon, carrying a faceplate upon a shaft journaled in said support at an elevation to the spindle, and means,

substantially as set forth, for driving said faceplate.

In testimony whereof I affix my signature in presence of tWo witnesses.

WALTER MIDDLEDITOH.

NVit-nesses: V

R. B. WVHEELER, B. S. WHEELER. 

